Analysis of the decay ψ→vector+pseudoscalar

Abstract

An analysis of eight two-body Okubo-Zweig-Iizuka-rule-violating decays of $\psi$ to a vector and a pseudoscalar is carried out. The analysis uses the vector-dominance model and a standard parametrization of the Okubo-Zweig-Iizuka (OZI) process. It is pointed out that for two of the rates a second-order OZI process makes a substantial contribution. Seven of the eight rates are consistent with each other and the model; only $\psi \to \omega \eta$ is inconsistent. The average value of $G_{\omega \rho \pi }$ extracted from the data is 8.85 Ge${\mathrm{V}}^{-1\mathrm{}}$, consistent with the chiral result $G_{\omega \rho \pi }=\frac{{m_{\rho }}^2}{{\pi }^2{F_{\pi }}^3}=9.3\mathrm{}$ Ge${\mathrm{V}}^{-1\mathrm{}}$.